JP7359014B2 - Arms for cable installation - Google Patents

Description

This invention relates to a cable installation arm for installing cables such as communication lines and electric wires on utility poles.

For example, when installing or attaching communication lines to utility poles, each communication carrier carries out the construction so that the distance between the communication lines is at least a predetermined distance (legal distance). However, since there are few installation locations, a new communication line may be installed near an existing communication line even though the communication line interval is less than a predetermined distance.

Therefore, it is necessary to conduct periodic inspections to see if any construction is occurring where such separation is not ensured. Moreover, if it is confirmed that the installation is not ensuring sufficient distance, it is necessary to consult with the relevant telecommunications carrier and carry out construction work to change the installation location, which requires a great deal of time and effort.

On the other hand, a support device is known that allows electric wires to be arranged at predetermined intervals (for example, see Patent Document 1). In this support device, a V-shaped first arm is attached to a utility pole at the top and bottom, and a plurality of insulators for supporting electric wires are arranged at predetermined intervals on the slope of the first arm. .

Japanese Patent Application Publication No. 06-153349

By the way, there is a limit to the space available at the top of utility poles, so even if you can attach a horizontal arm to the pole, for example, when installing a new communication line on that arm, it will be difficult to connect it to the existing communication line. In reality, there are cases where it is not possible to secure a predetermined distance between the two, making it difficult to determine the installation position. Further, even if a communication line is constructed using the support device described in Patent Document 1, it is difficult to ensure a predetermined distance when constructing a new communication line thereafter. That is, for example, even if a cross arm that extends horizontally is attached between the upper and lower parts of the first cross arm, a new communication line will be constructed between the communication lines that have already been constructed using the support device. It is not possible to secure the specified distance.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a cable installation arm that can install a cable while ensuring a predetermined distance.

In order to solve the above-mentioned problems, the invention of claim 1 includes a cross arm main body that is rod-shaped and capable of erecting a cable on at least one end side, and a cross arm main body that is provided on the other end side of the cross arm main body, and that the cross arm main body is attached to a telephone pole. and a mounting means for attaching the cable to the arm arm main body, the arm arm main body is provided with a bending section, and the height of the cable can be adjusted by rotating at the bending section , and the arm arm main body is provided with a mounting means for attaching the cable to the arm arm main body. The arm for cable installation is characterized in that the arm is provided at a central portion and at the other end of the cable, and the arm main body extends in a rod shape from the bent portion in the central portion .

According to a second aspect of the invention, in the cable installation arm according to the first aspect, the bending portion is rotatable at an arbitrary angle .

According to a third aspect of the present invention, in the cable installation arm according to the first or second aspect, the arm main body is expandable and retractable.

According to the invention of claim 1, the cable installation height can be adjusted by rotating the cross arm main body at the bending part, so even in a limited installation space, the cable can be installed with a predetermined distance. It becomes possible to construct a In other words, because conventional cross arms extend horizontally orthogonally to utility poles, the distance between the cross arms and the cables is the same, and if the distance between the cross arms is not maintained at a specified distance, Also, it is not possible to secure a predetermined distance between the cables. On the other hand, according to this cable installation arm, even if the mounting arms cannot be installed at a specified distance, the arm body can be rotated at the bending part to adjust the cable installation height. By adjusting it, it is possible to ensure a predetermined distance between the cables.

In addition, it is possible to secure the specified distance by simply rotating the cross arm main body at the bending part without moving the common structure, making it possible to perform the erection work easily and quickly. A predetermined distance can be secured even if there is no moving space. In addition, if multiple arm arms for this cable installation are installed, depending on the installation state and surrounding environment, it is possible to rotate one arm arm body adjacent to the other arm arm body or rotate the arm arm body of the other arm arm body. Alternatively, by rotating both arms bodies, it becomes possible to more flexibly and reliably secure a predetermined distance.

Further, according to the invention of claim 1 , the bending portion is provided on the other end side away from the one end side of the arm arm main body, and since the arm arm main body rotates around the other end side, one end of the arm arm main body In other words, it is possible to greatly adjust the installation height of the cable. As a result, it becomes possible to flexibly and reliably secure a predetermined distance depending on the construction state, surrounding environment, etc.

Furthermore, according to the invention of claim 1 , the bending part is provided at the center of the arm arm main body, and since the arm arm main body rotates (bends) at the center, it can be flexible depending on the installation state and the surrounding environment. Moreover, it becomes possible to secure a predetermined distance reliably. For example, even if the cross arm body cannot be bent at the other end because there is a common structure around the utility pole, the specified distance can be maintained by bending the cross arm body at the center and moving one end up and down. It becomes possible to secure it.

According to the invention of claim 2 , since the bending part can be rotated at any angle, it is possible to arbitrarily adjust the installation height of the cable by rotating the arm arm body at any inclination angle. Become.

According to the third aspect of the invention, since the arm arm main body is expandable and retractable, it is possible to flexibly and reliably secure a predetermined distance depending on the installation state, surrounding environment, etc. That is, it is possible to ensure a predetermined distance by rotating the cross arm main body at the bending part and extending or contracting it depending on the installation position of other cables.

FIG. 2 is a front view showing a state in which a cable installation arm according to Embodiment 1 of the present invention is arranged. It is a front view which shows the construction tool arrange|positioned in the arm main body of the arm for cable construction of FIG. It is a front view which shows the arrangement|positioning state of the arm for cable installation based on Embodiment 2 of this invention. It is a front view which shows the arrangement state of the arm for cable installation based on Embodiment 3 of this invention. It is a front view which shows the arrangement state of the arm for cable installation based on Embodiment 4 of this invention.

The present invention will be described below based on the illustrated embodiments.

(Embodiment 1)
1 and 2 show this embodiment, and FIG. 1 is a front view showing the arrangement state of a cable installation arm 1 according to this embodiment. This cable installation arm 1 is a hanging tool for constructing a cable 110 such as a communication line or an electric wire on a utility pole P, and mainly includes a arm body 2, a bending body (bending part) 3, and a mounting band ( Attachment means) 4. Here, as shown in FIG. 1, a case will be mainly described in which a conventional cross arm 100 is already attached to a utility pole P. This cross arm 100 has a cable 110 installed on one end side of the arm arm main body 101, and is attached to a telephone pole P at the base end 102 on the other end side with an attachment band 103, so that the arm arm main body 101 is perpendicular to the telephone pole P. and extends horizontally.

The cross arm main body 2 is a rod-shaped member on which a cable 110 can be installed on at least one end side. Specifically, it is composed of a hollow rod with a square cross section, and a shaft hole is formed on the other end side from the front to the back surface, and a rotating shaft (horizontal shaft) 30, which will be described later, is inserted into this shaft hole. Furthermore, a bolt insertion hole penetrating from the front to the back is formed on one end side (cable 110 side) of this shaft hole, and an adjustment bolt is inserted therein as described later.

Further, a predetermined number of construction tools 5 for constructing the cable 110 are disposed on the cross arm main body 2. Here, in this embodiment, a case will be described in which one erection tool 5 is disposed only on one end side of the arm arm main body 2, but it may also be arranged at the center of the arm arm main body 2. good.

The construction tool 5 may have any configuration as long as it can construct the cable 110, but in this embodiment, as shown in FIG. 2, it includes an L-shaped mounting member 51, a gripping member 54, and the like. The L-shaped mounting member 51 has an L-shape, and its horizontal portion is fixed to the cross arm main body 2 with a construction bolt 52 and a construction nut 53. The gripping member 54 includes a ring-shaped gripping portion 54a into which the cable 110 is inserted and gripped, and is fixed to the vertical portion of the L-shaped mounting member 51 with a gripping bolt 55 and a gripping nut 56.

Such arm arm main body 2 is provided with a refracting body 3, and by rotating with this refracting body 3, the installation height of cable 110 can be adjusted.In this embodiment, the refracting body 3 is It is provided on the other end side of the gold body 2. That is, the refracting body 3 is composed of two flat plates that sandwich the front and back surfaces of the arm arm main body 2, and a shaft hole is formed passing through the two flat plates, and this shaft hole and the shaft hole of the arm arm main body 2 are connected. The rotary shaft 30 is inserted and attached by overlapping the two.

Furthermore, three bolt insertion holes 31 to 33 are formed in the two flat plates of the refracting body 3 on a circular arc centered on the shaft hole, that is, the rotating shaft 30. Then, rotate the arm arm body 2 around the rotation axis 30, insert an adjustment bolt into any of the bolt insertion holes 31 to 33 and the bolt insertion hole of the arm arm body 2, and tighten the nut on the adjustment bolt. . Thereby, the inclination angle of the armrest main body 2 is adjusted, and the installation height of the cable 110 can be adjusted.

Here, in this embodiment, when the adjustment bolt is inserted into the first bolt insertion hole 31 while attached to the utility pole P as described later, the arm arm main body 2 will be approximately orthogonal to the utility pole P. It is arranged to extend substantially horizontally (as indicated by the chain double-dashed line in FIG. 1). Further, when the adjustment bolt is inserted into the third bolt insertion hole 33, the arm arm main body 2 is arranged to stand up at the highest angle at the maximum inclination angle. Furthermore, when the adjustment bolt is inserted into the second bolt insertion hole 32, the cross arm main body 2 is arranged to extend obliquely upward from the refracting body 3 at an inclination angle lower than the maximum inclination angle. The rotation range (rotation angle) in which the arm arm main body 2 rotates in this way is such that by rotating the arm arm main body 2 even in a limited mounting space, a predetermined separation/distance can be maintained between the cables 110. It is set up so that it can be secured.

As described above, in this embodiment, the installation height of the cable 110 can be adjusted in three stages, but it may be adjustable in no stages. For example, instead of the bolt insertion holes 31 to 33, arc-shaped slits (elongated holes) centered on the rotation axis 30 are formed in the two flat plates of the refracting body 3. Then, by inserting an adjustment bolt into the arbitrary position of this slit and the bolt insertion hole of the arm arm main body 2, and tightening the nut on the adjustment bolt, the arm arm main body 2 can be rotated by an arbitrary inclination angle. The installation height of the cable 110 may be arbitrarily adjusted.

Further, screw holes/female threads may be formed in one flat plate of the refracting body 3 instead of the bolt insertion holes 31 to 33, and the adjustment bolts may be tightened. This makes it possible to eliminate nuts, improve workability and safety, and reduce costs.

The attachment band 4 is provided on the other end side of the arm arm main body 2 and is a band for attaching the arm arm main body 2 to the utility pole P. Specifically, in this embodiment, as shown in FIG. 1, the band is wound around the utility pole P and both ends are fixed to the flat plate of the refracting body 3 with fasteners (for example, bolts, nuts) 41. Then, the arm arm main body 2 is attached to the utility pole P. Here, in this embodiment, only one attachment band 4 is provided, but a plurality of attachment bands 4 may be provided depending on the weight of arm arm main body 2, the number of cables 110 installed, etc.

According to the cable installation arm 1 having such a configuration, the installation height of the cable 110 can be adjusted by rotating the arm arm main body 2 with the bending body 3, so that it can be easily installed even in a limited mounting space. , it becomes possible to construct the cables 110 while ensuring a predetermined separation/distance from adjacent cables 110. That is, in the conventional cross arm, as shown by the two-dot chain line in FIG. are equal to each other, and unless the mounting distance D of the armrests is a predetermined distance, the cable distance D1 cannot also be a predetermined distance. On the other hand, according to the present cable installation arm 1, even if the mounting distance D of the arm cannot maintain a predetermined distance, the arm 2 can be rotated by the refracting body 3 and the cable 110 can be By adjusting the installation height of the cables 110, it is possible to ensure the distance D2 between the cables 110 to be greater than a predetermined distance.

Moreover, it is possible to secure a predetermined distance by simply rotating the cross arm main body 2 with the refracting body 3 without moving the common structure, making it possible to perform the erection work easily and quickly. A predetermined distance can be secured even if there is no space for moving objects. In addition, when a plurality of arms 1 for cable installation are arranged, one arm arm body 2 adjacent to the other arm body 2 may be rotated or the other arm arm body 2 may be rotated depending on the installation state and surrounding environment. By moving the arms or rotating both arms bodies 2, it becomes possible to more flexibly and reliably secure a predetermined distance.

In addition, in this embodiment, the bending body 3 is provided on the other end side (on the utility pole P side) that is away from the one end side of the arm arm main body 2, and the arm arm main body 2 rotates around the other end. It becomes possible to greatly adjust one end side of the armrest main body 2, that is, the installation height of the cable 110. As a result, it becomes possible to flexibly and reliably secure a predetermined distance depending on the construction state, surrounding environment, etc.

(Embodiment 2)
FIG. 3 is a front view showing the arrangement state of the cable installation arm 11 according to this embodiment. This embodiment differs in configuration from the first embodiment in that the refracting body 3 is provided in the center between one end side and the other end side of the arm arm main body 6, and is similar to the first embodiment. Regarding the configuration, the explanation thereof will be omitted by assigning the same reference numerals.

That is, in this embodiment, the arm arm main body 6 is composed of a first arm arm main body 61 and a second arm arm main body 62, and one end side of the first arm arm main body 61 (the side opposite to the telephone pole P) The other end side (the side opposite to the cable 110) of the second cross arm main body 62 is connected by the bending body 3. Here, the two cross arm main bodies 61 and 62 are constituted by hollow rods with a square cross section as in the first embodiment, and the other end side of the first cross arm main body 61 has a base end portion that extends toward the utility pole P side. 61a is provided, and the first arm arm main body 61 is attached to the utility pole P with the attachment band 4 at this base end 61a. In this attached state, the first cross arm main body 61 is arranged to extend substantially perpendicularly to the utility pole P and substantially horizontally.

The refracting body 3 is fixed to one end side of the first cross arm main body 61 with a fastener (for example, a bolt or a nut) 64. Further, the other end side of the second arm arm main body 62 is connected to the refracting body 3, and the second arm arm main body 62 is rotatable around the rotation axis 30 of the refracting body 3 in the same manner as in the first embodiment. It has become. On the other hand, a cable 110 is installed on one end side of the second cross arm main body 62 via the installation tool 5, and the second cross arm main body 62 is rotated by the bending body 3, so that the installation height of the cable 110 can be adjusted. It is adjustable.

According to this embodiment, the refracting body 3 is provided at the center of the armrest main body 6, and the armrest main body 6 rotates (bends) at the center, so that the bending body 6 rotates (bends) depending on the installation state, the surrounding environment, etc. , it becomes possible to secure a predetermined distance flexibly and reliably. For example, even if the cross arm main body 6 cannot be bent at the other end because there is a common structure around the utility pole P, the cable can be bent by bending the cross arm main body 6 at the center and moving one end up and down. It becomes possible to ensure a predetermined distance between the two.

(Embodiment 3)
FIG. 4 is a front view showing the arrangement of the cable installation arm 12 according to this embodiment. This embodiment differs in structure from Embodiments 1 and 2 in that a plurality of refracting bodies 3 are provided on arm arm main body 6, and the same reference numerals are used for structures equivalent to Embodiments 1 and 2. By adding this, the explanation will be omitted.

In this embodiment, the refracting body 3 is provided at the other end side and the center portion of the arm arm main body 6. That is, similarly to the second embodiment, the arm arm main body 6 is composed of a first arm arm main body 61 and a second arm arm main body 62, and one end side of the first arm arm main body 61 (the side opposite to the utility pole P) ) and the other end side (the side opposite to the cable 110) of the second cross arm main body 62 are connected by the second bending body ₃₂ . Further, the other end side of the first cross arm main body 61 is connected to the first refracting body ₃₁ , and the first refracting body ₃₁ is attached to the telephone pole P with the attachment band 4, as in the first embodiment. There is.

As a result, the first arm main body 61 can be rotated around the rotation axis ₃₀ of the first refracting body 31, and the second arm arm main body 62 can be rotated around the rotation axis ₃₀ of the second refracting body 32. It can be rotated around. In other words, the arm arm main body 6 rotates (is bent) about the telephone pole P side as a base point, and also rotates at the central portion.

According to this embodiment, a plurality of refracting bodies 3 are provided and the cross arm main body 6 is bent at a plurality of locations, so that a predetermined distance can be flexibly and reliably secured depending on the construction state, surrounding environment, etc. becomes possible. For example, it is possible to ensure a predetermined distance by moving the one end side, that is, the cable 110, up and down while bending the cross arm main body 6 at a plurality of locations to avoid common objects.

(Embodiment 4)
FIG. 5 is a front view showing the arrangement of the cable installation arm 13 according to this embodiment. This embodiment differs in configuration from Embodiment 1 in that the arm arm main body 2 is extendable and retractable, and the same reference numerals will be given to the same components as in Embodiment 1, and their explanation will be omitted. do.

In this embodiment, the arm arm main body 2 is composed of a first arm arm main body 21 and a second arm arm main body 22, and the other end side of the second arm arm main body 22 (the side opposite to the cable 110) is the arm arm main body 2. It is inserted into one end side (the side opposite to the utility pole P) of the cross arm main body 21 of No. 1, and can be taken in and out. Further, a long hole 22a is formed at the other end of the second cross arm main body 22 and extends in the longitudinal direction from the front to the back surface, and a long hole 22a is formed at one end of the first cross arm main body 21. A penetrating fixing bolt 23 is attached. Then, by adjusting the amount of protrusion of the second arm arm main body 22 from the first arm arm main body 21 and tightening the nut on the fixing bolt 23, the length of the arm arm main body 2 can be freely adjusted (extendable). It has become.

According to this embodiment, since the armrest main body 2 is expandable and retractable, it is possible to flexibly and reliably secure a predetermined separation depending on the installation state, surrounding environment, and the like. That is, depending on the installation position of the other cables 110, etc., by rotating the cross arm main body 2 using the bending body 3 and also extending or contracting it, it is possible to ensure a predetermined distance.

Although the embodiments of this invention have been described above, the specific configuration is not limited to the above embodiments, and even if there are changes in the design within the scope of the gist of this invention, Included in invention. For example, in the first to fourth embodiments described above, the arm arm bodies 2 and 6 are rotated around the rotation axis 30 of the refracting body 3, but the arm arm bodies 2 and 6 are rotated through gears. You can also do this. Further, in the third embodiment described above, a case has been described in which two refracting bodies 3 are provided on the armature main body 6, but three or more refracting bodies 3 may be provided on the armature arm body 6. Further, in the first to fourth embodiments described above, the case where the armature main bodies 2 and 6 are inclined upward from the refracting body 3 is illustrated, but there are cases where the armature arm main bodies 2 and 6 are inclined downwardly or vertically. It may be something that does.

1, 11, 12, 13 Arms for cable installation 2 Arms main body 21 First arm arm main body 22 Second arm arm main body 3 Refracting body (bending part)
30 Rotating shaft 4 Mounting band (mounting means)
5 Erection tool 6 Cross arm body 61 First arm arm body 62 Second arm arm body 110 Cable P Utility pole

Claims (3)

a rod-shaped cross arm body on which a cable can be installed on at least one end;
a mounting means provided on the other end side of the arm arm main body for attaching the arm arm main body to a utility pole;
The cross arm main body includes a bending part, and by rotating at the bending part, the installation height of the cable can be adjusted ,
The bending portion is provided at a center portion and the other end side of the arm arm main body, and the arm arm main body extends in a rod shape from the bending portion at the center portion.
A cable arm for installing cables. The bending section is rotatable at any angle.
The cable installation arm according to claim 1. The arm arm main body is expandable and retractable;
The cable installation arm according to any one of claims 1 and 2 , characterized in that:

Images